A comprehensive range for bearings and other workpieces

SKF Induction Heaters

Incorrect mounting methods account for up to 16% of premature bearing failures

It’s a fact.

To reduce the risk of incorrect mounting, SKF helped

pioneer the use of portable induction heaters for bearing

mounting applications in the 1970’s. Since that time, there

have been many advances in technology and SKF has been

at the forefront in developing safer, more efficient and

user-friendly bearing induction heaters.

SKF Induction Heaters utilise advanced power electronics

with application specific designs for high performance.

Heating tools

As a result, by using an SKF induction heater, the total cost

of ownership is often significantly lower. Ergonomics and

safety are also an important consideration for operators.

SKF induction heaters are equipped with design features

that make them easy to use and safe. Bearing support

arms reduce the risk of the bearing toppling during

heating, and ergonomically designed yokes help reduce

operator fatigue. In addition, the unique remote control

enables the operator to control the heater at a safe

distance from the hot bearing, enhancing operator safety.

Foldable bearing support arms allow

larger diameter bearings to be heated

Magnetic temperature probe, on the inner

ring, helps prevent bearing overheating

Remote control makes the

heater easy and safe to use

The use of an open flame to heat a bearing is not only inefficient and

uncontrolled, but often leads to bearing damage. This method should

not be used.

Oil baths are sometimes used to heat bearings. Oil baths often take

a long time to reach the required temperature and can be difficult

to control the actual bearing temperature. The energy consumption of

an oil bath is also significantly greater than using an induction heater.

The risk of contaminating the bearing due to dirty oil is significant and

can lead to premature bearing failure. Handling hot, oily and slippery

bearings present significant hazards to the operator and great care must

be taken to avoid potential injuries.

Open flame Oil baths Ovens SKF induction heaters

• Advanced power electronics, with accurate electric current control,

help control the temperature rate increase

• Two step power setting option (50% / 100%), enables small bearings

to be heated safely and at a lower power consumption

• For heating components other than bearings, all heaters are equipped

with a heating time mode and for large components, optimized

TIH MB heaters for solid workpieces are available

• Thermal overheating protection reduces the risk of damage to the

induction coil and electronics, enhancing reliability and safety

• Automatic demagnetisation reduces the risk of ferrous debris

contamination after heating

• Available in different voltage variants, to suit most operating voltages

worldwide

• Supplied with heat-resistant gloves for improved operator safety

The comprehensive SKF induction heater range can

be used for efficiently heating bearings and workpieces,

both large and small. Their innovative design offers

significant advantages to both owners and operators:

Features and benefits

Ovens and hot plates are often used for batch heating of small bearings

and this is an acceptable technique. However, for larger bearings, the use

of ovens and hotplates is generally quite inefficient and time consuming

and can present the operator with significant handling hazards.

Induction heaters are the modern, efficient and safe way to

heat bearings. In operation, they are generally faster, cleaner,

more controllable, and easier to use than other heating methods.

Induction coil located outside the heater’s housing enables

a shorter heating time and lower energy consumption

Foldable bearing support arms allow larger diameter bearings

to be heated, and reduce the risk of the bearing toppling

during heating

Magnetic temperature probe, combined with a temperature mode

pre-set at 110 °C (230 °F), helps prevent bearing overheating

Unique SKF remote control, with operating display and control panel,

makes the heater easy and safe to use

Internal yoke storage, for smaller yoke(s), reduces the risk of yoke

damage or loss

Integrated carrying handles allow for easy movement of the heater

in the workshop

Sliding or swivel arm allows for easy and quick bearing

replacement, reducing operator fatigue (not for TIH 030m)

Induction heating has many advantages over other bearing heating methods

100

150

300

400

600

700

800

5 30 40 120 220100 300 700 1 200

d [mm]

kg

TMBH 1

TIH 030m

TIH 100m

TIH 220m

TIH L44

TIH L33

TIH L77

= m20

TIH 030m

Small induction heater with a

40 kg bearing heating capacity

• Compact lightweight design; just 21 kg

(46 lb), facilitating portability

• Capable of heating a 28 kg (62 lb)

bearing in just 20 minutes

• Supplied standard with three yokes,

allowing bearings with a bore diameter from

20 mm (0.8 in.) up to a maximum weight of

40 kg (90 lb) to be heated

TIH 100m

Medium induction heater with a

120 kg bearing heating capacity

• Capable of heating a 97 kg (213 lb)

bearing in less than 20 minutes

• Supplied standard with three yokes,

allowing bearings with a bore diameter

from 20 mm (0.8 in.) up to a maximum

weight of 120 kg (264 lb) to be heated

• Swivel arm for large size yoke

TMBH 1

Portable induction heater

weighing only 4,5 kg

• Portable, lightweight, high efficiency heater

for bearings with an inner diameter ranging

from 20 to 100 mm (0.8 to 4 in.), and a

maximum weight of 5 kg (11 lb)

• Equipped with temperature and time

control and automatic demagnetisation

• Supplied in a carrying case

Induction heaters

The comprehensive range of SKF induction

heaters is suitable for most bearing heating

applications. The chart gives general

information on choosing an induction

heater for bearing heating applications 1).

The SKF m20 concept represents the

weight (kg) of the heaviest SKF spherical

roller bearing of series 231 which can be

heated from 20 to 110 °C (68 to 230 °F)

in 20 minutes. This defines the heater’s

power output instead of its power

consumption. Unlike other bearing heaters,

there is a clear indication of how long it takes

to heat a bearing, rather than just

the maximum bearing weight possible.

SKF induction heater range

1) For heating components other than bearings, SKF recommends consideration of TIH L MB series heater. Contact SKF to help you select a suitable induction heater for your application.

TIH 220m

Large induction heater with a 300 kg bearing

heating capacity

• Capable of heating a 220 kg (480 lb) bearing in just

20 minutes

• Supplied standard with two yokes, allowing bearings

with a bore diameter from 60 mm (2.3 in.) up to a

maximum weight of 300 kg (660 lb) to be heated

• Sliding arm for large size yoke

TIH L33

Large induction heater with a

700 kg bearing heating capacity

• Using just 15 kVA of electrical power,

the TIH L33 can heat large bearings up

to 700 kg (1 543 lb)

• Bearings and work pieces can be heated

vertically or horizontally

• Compact design allows the TIH L series

heaters to be easily transported by forklift

TIH L series

Extra large induction heater with a 1 200 kg

bearing heating capacity

• Using just 20 kVA of electrical power, the TIH L series can

heat large bearings up to 1 200 kg (2 600 lb)

• Bearings and work pieces can be heated vertically or horizontally

• Compact design allows the TIH L series heaters to be easily

transported by forklift

• Available with two different operating areas

Designation TMBH 1 TIH 030m TIH 100m TIH 220m

Max. bearing weight 5 kg (11 lb) 40 kg (88 lb) 120 kg (264 lb) 300 kg (662 lb)

Bore diameter range 20–100 mm (0.8–4 in.) 20–300 mm (0.8–11.8 in.) 20–400 mm (0.8–15.7 in.) 60–600 mm (2.3–23.6 in.)

Operating area (w × h) 52 × 52 mm (2 × 2 in.) 100 × 135 mm (3.9 × 5.3 in.) 155 × 205 mm (6.1 × 8 in.) 250 × 255 mm (9.8 × 10 in.)

Coil diameter N/A 95 mm (3.7 in.) 110 mm (4.3 in.) 140 mm (5.5 in.)

Standard yokes (included) to suit bearing/workpiece minimum bore diameter

20 mm (0.8 in.) 65 mm (2,6 in.) 40 mm (1.6 in.) 20 mm (0.8 in.)

80 mm (3.1 in.) 40 mm (1.6 in.) 20 mm (0.8 in.)

100 mm (3.9 in.) 60 mm (2.3 in.)

Application example (bearing, weight, temperature, time)

6310, 1,07 kg, 110 °C, 1m 45s

23136 CC/W33, 28 kg, 110 °C, 20m

23156 CC/W33, 97 kg, 110 °C, 20m

23172 CC/W33, 220 kg, 110 °C, 20m

Max. power consumption 0,35 kVA 2,0 kVA 3,6 kVA (230 V) 4,0–4,6 kVA (400–460 V)

10,0–11,5 kVA (400–460 V)

Voltage 1)

100–240 V/50–60 Hz100–120 V/50–60 Hz200–240 V/50–60 Hz400–460 V/50–60 Hz

TMBH 1–– –

– TIH 030m/110 VTIH 030m/230 V –

– – TIH 100m/230 VTIH 100m/MV

– – TIH 220m/LVTIH 220m/MV

Temperature control 2) 0 to 200 °C (32 to 392 °F) 20 to 250 °C (68 to 482 °F) 20 to 250 °C (68 to 482 °F) 20 to 250 °C (68 to 482 °F)

Demagnetisation according to SKF norms

N/A <2 A/cm <2 A/cm <2 A/cm

Dimensions (w × d × h) 330 × 150 × 150 mm (13 × 5.9 × 5.9 in.) Clamp: 115 × 115 × 31 mm (4.5 × 4.5 × 1.2 in.)

460 × 200 × 260 mm (18.1 × 7.9 × 10.2 in.)

570 × 230 × 350 mm (22.4 × 9 × 13.7 in.)

750 × 290 × 440 mm (29.5 × 11.4 × 17.3 in.)

Total weight (incl. yokes) 4,5 kg (10 lb) 20,9 kg (46 lb) 42 kg (92 lb) 86 kg (189 lb)

Designation TIH L33 TIH L44 TIH L77

Max. bearing weight 700 kg (1 543 lb) 1 200 kg (2 600 lb) 1 200 kg (2 600 lb)

Bore diameter range 115–700 mm (4.5–27.6 in.) 150–800 mm (5.9–31.5 in.) 150–800 mm (5.9–31.5 in.)

Operating area (w × h) 300 × 320 mm (11.8 × 12.6 in.) 425 × 492 mm (16.7 × 19.4 in.) 725 × 792 mm (28.5 × 31.2 in.)

Coil diameter 150 mm (5.9 in.) 175 mm (6.9 in.) 175 mm (6.9 in.)

Standard yokes (included) to suit bearing minimum bore diameter

115 mm (4.5 in.) 150 mm (5.9 in.) 150 mm (5.9 in.)

Optional yokes to suit bearing minimum bore diameter

80 mm (3.1 in.) 60 mm (2.4 in.)

100 mm (3.9 in.) –

Application example (bearing, weight, temperature, time)

24188ECA/W33, 455 kg, 110 °C, 28m

24188ECA/W33, 455 kg, 110 °C, 13m

–

Max. power consumption TIH L33/LV: 15 kVA TIH L33/MV: 15 kVA

TIH L44/MV: 20–23 kVA TIH L44/LV: 20–24 kVA

TIH L77/MV: 20–23 kVA TIH L77/LV: 20–24 kVA

Voltage 1)

200–240 V/50–60 Hz400–460 V/50–60 Hz

TIH L33/LVTIH L33/MV

TIH L44/LVTIH L44/MV

TIH L77/LVTIH L77/MV

Temperature control 2) 0 to 250 °C (32 to 482 °F) 20 to 250 °C (68 to 482 °F) 20 to 250 °C (68 to 482 °F)

Demagnetisation according to SKF norms

<2 A/cm <2 A/cm <2 A/cm

Dimensions (w × d × h) 400 × 743 × 550 mm (15.8 × 29.3 × 21.7 in.)

1 200 × 600 × 850 mm (47.3 × 23.6 × 33.5 in.)

1 320 × 600 × 1 150 mm (52 × 23.6 × 45.3 in.)

Total weight (incl. yokes) 140 kg (309 lb) 324 kg (714 lb) 415 kg (915 lb)

Technical data

Technical data - TIH L series

1) Some special voltage versions (e.g. 575V, 60 Hz CSA ready) are available for specific countries. For additional information, please contact your local SKF authorised distributor. 2) Maximum heating temperature capacity depends on the weight and geometry of the bearing or workpiece. The heaters can achieve higher temperatures, please contact SKF for advice.

Solid workpiece heaters

The SKF TIH L MB series is specially designed to heat solid workpieces, such as rings, sleeves,

gears, couplings, bushings and pulleys, as well as train wheels, tires or similar components.

Featuring one magnetic coil in the center, these powerful and durable heaters localize the

heating in the workpiece bore for superior performance on solid components.

Induction heaters for non-bearing applications

TIH L MB series

The TIH L MB series provides the following advantages for quick and effective

heating of solid workpieces:

• Simple and safe operation with remote-control and power level selection

• Superior heating performance for solid workpieces with low energy consumption

• Quick and easy placement of solid components with sliding yoke

• Automatic demagnetization reduces risk of ferrous debris contamination

• Easy to transport using standard forklift

• Available in three voltage variants to suit most operating voltages worldwide

• Available with three different operating areas

The TIH L MB induction heater is equipped with

a remote control panel for operator safety.

Advice: The SKF TIH L MB series heaters

are designed for induction heating of solid,

non-bearing components. For bearing-

heating applications, we recommend the

use of equivalent SKF TIH L series heaters.

The TIH L MB heats non-bearing workpieces up

to 600 kg (1 323 lb), depending on the model.

skf.com | mapro.skf.com | skf.com/lubrication

® SKF is a registered trademark of the SKF Group.

© SKF Group 2017The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein.

PUB MP/P8 10921/2 EN · August 2017

Designation TIH L33MB TIH L44MB TIH L77MB

Maximum workpiece weight 350 kg (772 lb) 600 kg (1 323 lb) 600 kg (1 323 lb)

Bore diameter range 115–700 mm (4.5–27.6 in.) 150–800 mm (5.9–31.5 in.) 150–800 mm (5.9–31.5 in.)

Operating area (w × h) 330 × 320 mm (13.0 × 12.6 in.) 465 × 492mm (18.3 × 19.4 in.) 765 × 792mm (30.1 × 31.2 in.)

Coil diameter 150 mm (5.9 in.) 175 mm (6.9 in.) 175 mm (6.9 in.)

Standard yokes (included) to suit workpiece minimum bore diameter

115 mm (4.5 in.)

150 mm (5.9 in.)

150 mm (5.9 in.)

Max. power consumption TIH L33MB/MV: 15 kVA TIH L33MB/LV: 15 kVA

TIH L44MB/LV: 20–24 kVA TIH L44MB/MV: 20–23 kVA

TIH L77MB/LV: 20–24 kVA TIH L77MB/MV: 20–23 kVA

Voltage 1)

200–240 V/50–60 Hz400–460 V/50–60 Hz

TIH L33MB/LVTIH L33MB/MV

TIH L44MB/LVTIH L44MB/MV

TIH L77MB/LVTIH L77MB/MV

Temperature control 0–250 °C (32–482 °F); in steps of 1° 0–250 °C (32–482 °F); in steps of 1° 0–250 °C (32–482 °F); in steps of 1°

Time control 0–120 minutes; in steps of 0,1 minute

0–120 minutes; in steps of 0,1 minute

0–120 minutes; in steps of 0,1 minute

Demagnetisation according to SKF norms

<2A/cm

<2A/cm

<2A/cm

Maximum heating temperature 2) 250 °C (482 °F) 250 °C (482 °F) 250 °C (482 °F)

Dimensions (w × d × h) 400 × 743 × 550 mm (15.8 × 29.3 × 21.7 in.)

1 200 × 600 × 850 mm (47.3 × 23.6 × 33.5 in.)

1 320 × 600 × 1 150 mm (52 × 23.6 × 45.3 in.)

Weight 140 kg (309 lb) 324 kg (714 lb) 415 kg (915 lb)

Technical data

1) Some special voltage versions (e.g. 575V, 60Hz CSA ready) are available for specific countries. For additional information, please contact your local SKF authorised distributor.2) Depending on bearing or workpiece weight. For higher temperatures, please contact SKF.

Heater selection tool

The online heater selection tool helps to select the most appropriate SKF heater

for a given hot mounting or dismounting application of bearings or annular

workpieces.

In just three easy steps, you can define your heating application and receive a list

of all suitable heaters for that application, including a recommendation of the

heater that offers the best price-performance ratio.

The online heater selection tool is available free of charge, just scan the QR code

or visit us on www.mapro.skf.com/heaterselect

The heater selection tool supports all mounting and fixed size EAZ dismounting

heaters and offers additional information such as the product data sheet,

technical data and product websites for each heater. If you cannot find the right

heater for your application or you need more information, please don’t hesitate

to contact SKF.

www.mapro.skf.com/heaterselect